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CVE-2019-5598

25
FAUCET Score

CVE-2019-5598 is a vulnerability in the pf packet filter of FreeBSD versions 11.3-PRERELEASE, 12.0-STABLE, 11.2-RELEASE, and 12.0-RELEASE. A bug allows specially crafted ICMP or ICMP6 packets to bypass firewall rules, potentially reaching hosts that should be inaccessible. With a CVSS score of 7.5 (HIGH), this vulnerability has a network attack vector and low attack complexity, allowing an attacker to achieve high integrity impact without user interaction. There is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:-:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p2:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p3:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p4:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p5:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.34%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0334 is in the 78th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

seclists.org / fulldisclosure/2025/Apr/1
packetstormsecurity.com / files/152934/FreeBSD-Security-Advisory-FreeBSD-SA-19-06.pf.html
Third Party AdvisoryVDB Entry
security.freebsd.org / advisories/FreeBSD-SA-19:06.pf.asc
PatchVendor Advisory
security.netapp.com / advisory/ntap-20190611-0001
oracle.com / technetwork/security-advisory/cpujul2019-5072835.html
synacktiv.com / posts/systems/icmp-reachable.html
Third Party Advisory
securityfocus.com / bid/108395